diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.0/0004-bcma-add-SOC-bus.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.0/0004-bcma-add-SOC-bus.patch | 417 |
1 files changed, 0 insertions, 417 deletions
diff --git a/target/linux/brcm47xx/patches-3.0/0004-bcma-add-SOC-bus.patch b/target/linux/brcm47xx/patches-3.0/0004-bcma-add-SOC-bus.patch deleted file mode 100644 index 6ad9dce4b8..0000000000 --- a/target/linux/brcm47xx/patches-3.0/0004-bcma-add-SOC-bus.patch +++ /dev/null @@ -1,417 +0,0 @@ -From d743a740b76a6be9e88fe1ae6991682927a7769c Mon Sep 17 00:00:00 2001 -From: Hauke Mehrtens <hauke@hauke-m.de> -Date: Sat, 18 Jun 2011 14:31:53 +0200 -Subject: [PATCH 04/26] bcma: add SOC bus -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -This patch adds support for using bcma on a Broadcom SoC as the system -bus. An SoC like the bcm4716 could register this bus and use it to -searches for the bcma cores and register the devices on this bus. - -BCMA_HOSTTYPE_NONE was intended for SoCs at first but BCMA_HOSTTYPE_SOC -is a better name. - -Acked-by: Rafał Miłecki <zajec5@gmail.com> -Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> ---- - drivers/bcma/Kconfig | 4 + - drivers/bcma/Makefile | 1 + - drivers/bcma/core.c | 2 + - drivers/bcma/driver_pci.c | 9 ++- - drivers/bcma/host_soc.c | 183 +++++++++++++++++++++++++++++++++++++++++ - drivers/bcma/main.c | 9 ++- - drivers/bcma/scan.c | 42 ++++++++- - include/linux/bcma/bcma.h | 5 +- - include/linux/bcma/bcma_soc.h | 16 ++++ - 9 files changed, 263 insertions(+), 8 deletions(-) - create mode 100644 drivers/bcma/host_soc.c - create mode 100644 include/linux/bcma/bcma_soc.h - ---- a/drivers/bcma/Kconfig -+++ b/drivers/bcma/Kconfig -@@ -34,6 +34,10 @@ config BCMA_DRIVER_PCI_HOSTMODE - help - PCI core hostmode operation (external PCI bus). - -+config BCMA_HOST_SOC -+ bool -+ depends on BCMA && MIPS -+ - config BCMA_DEBUG - bool "BCMA debugging" - depends on BCMA ---- a/drivers/bcma/Makefile -+++ b/drivers/bcma/Makefile -@@ -3,6 +3,7 @@ bcma-y += driver_chipcommon.o driver - bcma-y += driver_pci.o - bcma-$(CONFIG_BCMA_DRIVER_PCI_HOSTMODE) += driver_pci_host.o - bcma-$(CONFIG_BCMA_HOST_PCI) += host_pci.o -+bcma-$(CONFIG_BCMA_HOST_SOC) += host_soc.o - obj-$(CONFIG_BCMA) += bcma.o - - ccflags-$(CONFIG_BCMA_DEBUG) := -DDEBUG ---- a/drivers/bcma/core.c -+++ b/drivers/bcma/core.c -@@ -110,6 +110,8 @@ EXPORT_SYMBOL_GPL(bcma_core_pll_ctl); - u32 bcma_core_dma_translation(struct bcma_device *core) - { - switch (core->bus->hosttype) { -+ case BCMA_HOSTTYPE_SOC: -+ return 0; - case BCMA_HOSTTYPE_PCI: - if (bcma_aread32(core, BCMA_IOST) & BCMA_IOST_DMA64) - return BCMA_DMA_TRANSLATION_DMA64_CMT; ---- a/drivers/bcma/driver_pci.c -+++ b/drivers/bcma/driver_pci.c -@@ -208,7 +208,14 @@ int bcma_core_pci_irq_ctl(struct bcma_dr - { - struct pci_dev *pdev = pc->core->bus->host_pci; - u32 coremask, tmp; -- int err; -+ int err = 0; -+ -+ if (core->bus->hosttype != BCMA_HOSTTYPE_PCI) { -+ /* This bcma device is not on a PCI host-bus. So the IRQs are -+ * not routed through the PCI core. -+ * So we must not enable routing through the PCI core. */ -+ goto out; -+ } - - err = pci_read_config_dword(pdev, BCMA_PCI_IRQMASK, &tmp); - if (err) ---- /dev/null -+++ b/drivers/bcma/host_soc.c -@@ -0,0 +1,183 @@ -+/* -+ * Broadcom specific AMBA -+ * System on Chip (SoC) Host -+ * -+ * Licensed under the GNU/GPL. See COPYING for details. -+ */ -+ -+#include "bcma_private.h" -+#include "scan.h" -+#include <linux/bcma/bcma.h> -+#include <linux/bcma/bcma_soc.h> -+ -+static u8 bcma_host_soc_read8(struct bcma_device *core, u16 offset) -+{ -+ return readb(core->io_addr + offset); -+} -+ -+static u16 bcma_host_soc_read16(struct bcma_device *core, u16 offset) -+{ -+ return readw(core->io_addr + offset); -+} -+ -+static u32 bcma_host_soc_read32(struct bcma_device *core, u16 offset) -+{ -+ return readl(core->io_addr + offset); -+} -+ -+static void bcma_host_soc_write8(struct bcma_device *core, u16 offset, -+ u8 value) -+{ -+ writeb(value, core->io_addr + offset); -+} -+ -+static void bcma_host_soc_write16(struct bcma_device *core, u16 offset, -+ u16 value) -+{ -+ writew(value, core->io_addr + offset); -+} -+ -+static void bcma_host_soc_write32(struct bcma_device *core, u16 offset, -+ u32 value) -+{ -+ writel(value, core->io_addr + offset); -+} -+ -+#ifdef CONFIG_BCMA_BLOCKIO -+static void bcma_host_soc_block_read(struct bcma_device *core, void *buffer, -+ size_t count, u16 offset, u8 reg_width) -+{ -+ void __iomem *addr = core->io_addr + offset; -+ -+ switch (reg_width) { -+ case sizeof(u8): { -+ u8 *buf = buffer; -+ -+ while (count) { -+ *buf = __raw_readb(addr); -+ buf++; -+ count--; -+ } -+ break; -+ } -+ case sizeof(u16): { -+ __le16 *buf = buffer; -+ -+ WARN_ON(count & 1); -+ while (count) { -+ *buf = (__force __le16)__raw_readw(addr); -+ buf++; -+ count -= 2; -+ } -+ break; -+ } -+ case sizeof(u32): { -+ __le32 *buf = buffer; -+ -+ WARN_ON(count & 3); -+ while (count) { -+ *buf = (__force __le32)__raw_readl(addr); -+ buf++; -+ count -= 4; -+ } -+ break; -+ } -+ default: -+ WARN_ON(1); -+ } -+} -+ -+static void bcma_host_soc_block_write(struct bcma_device *core, -+ const void *buffer, -+ size_t count, u16 offset, u8 reg_width) -+{ -+ void __iomem *addr = core->io_addr + offset; -+ -+ switch (reg_width) { -+ case sizeof(u8): { -+ const u8 *buf = buffer; -+ -+ while (count) { -+ __raw_writeb(*buf, addr); -+ buf++; -+ count--; -+ } -+ break; -+ } -+ case sizeof(u16): { -+ const __le16 *buf = buffer; -+ -+ WARN_ON(count & 1); -+ while (count) { -+ __raw_writew((__force u16)(*buf), addr); -+ buf++; -+ count -= 2; -+ } -+ break; -+ } -+ case sizeof(u32): { -+ const __le32 *buf = buffer; -+ -+ WARN_ON(count & 3); -+ while (count) { -+ __raw_writel((__force u32)(*buf), addr); -+ buf++; -+ count -= 4; -+ } -+ break; -+ } -+ default: -+ WARN_ON(1); -+ } -+} -+#endif /* CONFIG_BCMA_BLOCKIO */ -+ -+static u32 bcma_host_soc_aread32(struct bcma_device *core, u16 offset) -+{ -+ return readl(core->io_wrap + offset); -+} -+ -+static void bcma_host_soc_awrite32(struct bcma_device *core, u16 offset, -+ u32 value) -+{ -+ writel(value, core->io_wrap + offset); -+} -+ -+const struct bcma_host_ops bcma_host_soc_ops = { -+ .read8 = bcma_host_soc_read8, -+ .read16 = bcma_host_soc_read16, -+ .read32 = bcma_host_soc_read32, -+ .write8 = bcma_host_soc_write8, -+ .write16 = bcma_host_soc_write16, -+ .write32 = bcma_host_soc_write32, -+#ifdef CONFIG_BCMA_BLOCKIO -+ .block_read = bcma_host_soc_block_read, -+ .block_write = bcma_host_soc_block_write, -+#endif -+ .aread32 = bcma_host_soc_aread32, -+ .awrite32 = bcma_host_soc_awrite32, -+}; -+ -+int __init bcma_host_soc_register(struct bcma_soc *soc) -+{ -+ struct bcma_bus *bus = &soc->bus; -+ int err; -+ -+ /* iomap only first core. We have to read some register on this core -+ * to scan the bus. -+ */ -+ bus->mmio = ioremap_nocache(BCMA_ADDR_BASE, BCMA_CORE_SIZE * 1); -+ if (!bus->mmio) -+ return -ENOMEM; -+ -+ /* Host specific */ -+ bus->hosttype = BCMA_HOSTTYPE_SOC; -+ bus->ops = &bcma_host_soc_ops; -+ -+ /* Register */ -+ err = bcma_bus_early_register(bus, &soc->core_cc, &soc->core_mips); -+ if (err) -+ iounmap(bus->mmio); -+ -+ return err; -+} ---- a/drivers/bcma/main.c -+++ b/drivers/bcma/main.c -@@ -66,6 +66,10 @@ static struct bcma_device *bcma_find_cor - static void bcma_release_core_dev(struct device *dev) - { - struct bcma_device *core = container_of(dev, struct bcma_device, dev); -+ if (core->io_addr) -+ iounmap(core->io_addr); -+ if (core->io_wrap) -+ iounmap(core->io_wrap); - kfree(core); - } - -@@ -93,7 +97,10 @@ static int bcma_register_cores(struct bc - core->dma_dev = &bus->host_pci->dev; - core->irq = bus->host_pci->irq; - break; -- case BCMA_HOSTTYPE_NONE: -+ case BCMA_HOSTTYPE_SOC: -+ core->dev.dma_mask = &core->dev.coherent_dma_mask; -+ core->dma_dev = &core->dev; -+ break; - case BCMA_HOSTTYPE_SDIO: - break; - } ---- a/drivers/bcma/scan.c -+++ b/drivers/bcma/scan.c -@@ -337,6 +337,16 @@ static int bcma_get_next_core(struct bcm - } - } - } -+ if (bus->hosttype == BCMA_HOSTTYPE_SOC) { -+ core->io_addr = ioremap_nocache(core->addr, BCMA_CORE_SIZE); -+ if (!core->io_addr) -+ return -ENOMEM; -+ core->io_wrap = ioremap_nocache(core->wrap, BCMA_CORE_SIZE); -+ if (!core->io_wrap) { -+ iounmap(core->io_addr); -+ return -ENOMEM; -+ } -+ } - return 0; - } - -@@ -369,7 +379,14 @@ int bcma_bus_scan(struct bcma_bus *bus) - bcma_init_bus(bus); - - erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM); -- eromptr = bus->mmio; -+ if (bus->hosttype == BCMA_HOSTTYPE_SOC) { -+ eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE); -+ if (!eromptr) -+ return -ENOMEM; -+ } else { -+ eromptr = bus->mmio; -+ } -+ - eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32); - - bcma_scan_switch_core(bus, erombase); -@@ -404,6 +421,9 @@ int bcma_bus_scan(struct bcma_bus *bus) - list_add(&core->list, &bus->cores); - } - -+ if (bus->hosttype == BCMA_HOSTTYPE_SOC) -+ iounmap(eromptr); -+ - return 0; - } - -@@ -414,10 +434,18 @@ int __init bcma_bus_scan_early(struct bc - u32 erombase; - u32 __iomem *eromptr, *eromend; - -- int err, core_num = 0; -+ int err = -ENODEV; -+ int core_num = 0; - - erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM); -- eromptr = bus->mmio; -+ if (bus->hosttype == BCMA_HOSTTYPE_SOC) { -+ eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE); -+ if (!eromptr) -+ return -ENOMEM; -+ } else { -+ eromptr = bus->mmio; -+ } -+ - eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32); - - bcma_scan_switch_core(bus, erombase); -@@ -447,8 +475,12 @@ int __init bcma_bus_scan_early(struct bc - core->id.class); - - list_add(&core->list, &bus->cores); -- return 0; -+ err = 0; -+ break; - } - -- return -ENODEV; -+ if (bus->hosttype == BCMA_HOSTTYPE_SOC) -+ iounmap(eromptr); -+ -+ return err; - } ---- a/include/linux/bcma/bcma.h -+++ b/include/linux/bcma/bcma.h -@@ -14,9 +14,9 @@ struct bcma_device; - struct bcma_bus; - - enum bcma_hosttype { -- BCMA_HOSTTYPE_NONE, - BCMA_HOSTTYPE_PCI, - BCMA_HOSTTYPE_SDIO, -+ BCMA_HOSTTYPE_SOC, - }; - - struct bcma_chipinfo { -@@ -138,6 +138,9 @@ struct bcma_device { - u32 addr; - u32 wrap; - -+ void __iomem *io_addr; -+ void __iomem *io_wrap; -+ - void *drvdata; - struct list_head list; - }; ---- /dev/null -+++ b/include/linux/bcma/bcma_soc.h -@@ -0,0 +1,16 @@ -+#ifndef LINUX_BCMA_SOC_H_ -+#define LINUX_BCMA_SOC_H_ -+ -+#include <linux/bcma/bcma.h> -+ -+struct bcma_soc { -+ struct bcma_bus bus; -+ struct bcma_device core_cc; -+ struct bcma_device core_mips; -+}; -+ -+int __init bcma_host_soc_register(struct bcma_soc *soc); -+ -+int bcma_bus_register(struct bcma_bus *bus); -+ -+#endif /* LINUX_BCMA_SOC_H_ */ |